By train :
 RER B, Denfert-Rochereau station (to Charles de Gaulle airport or Gare du Nord railway station)
 RER B + Orlyval (at Antony RER B station) to Orly Airport

By subway :
 line 4, Denfert-Rochereau station (to Montparnasse, Gare de l'Est and Gare du Nord railway stations)
 line 6, Denfert-Rochereau station (to Montparnasse; connections to Austerlitz and Gare de Lyon railway stations)

By bus:
 Orlybus to Orly airport

By taxi :
 A taxi rank is located at Place Denfert-Rochereau